Fabrication of nanoporous silicon dioxide/silicon nitride membranes using etched ion track technique

Zhang, W.M.; Li, J.; Cao, Liuxuan; Wang, Y.G.; Guo, Wei; Liu, K.X.; Xue, Jianming

doi:10.1016/j.nimb.2008.03.213

Cited by 23 publications

(11 citation statements)

References 13 publications

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“…Based on this approach, a freestanding nanomembrane with ∼350 nm pores supported by microstructures (∼100 μm) was successfully fabricated, as shown in Figure a . In addition to the photolithographic process, a variety of methods including the block copolymer method, sacrificial particle method, track etching, and macromolding has been suggested to make hierarchical membrane structures using inorganic materials. These approaches have several strengths, such as relatively high throughput, excellent control over the pore diameter, and facile integration into microscale devices (e.g., microfluidic devices) .…”

Section: Applications Of Bio‐inspired Multiscale Structuresmentioning

confidence: 99%

25th Anniversary Article: Scalable Multiscale Patterned Structures Inspired by Nature: the Role of Hierarchy

et al. 2013

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Multiscale, hierarchically patterned surfaces, such as lotus leaves, butterfly wings, adhesion pads of gecko lizards are abundantly found in nature, where microstructures are usually used to strengthen the mechanical stability while nanostructures offer the main functionality, i.e., wettability, structural color, or dry adhesion. To emulate such hierarchical structures in nature, multiscale, multilevel patterning has been extensively utilized for the last few decades towards various applications ranging from wetting control, structural colors, to tissue scaffolds. In this review, we highlight recent advances in scalable multiscale patterning to bring about improved functions that can even surpass those found in nature, with particular focus on the analogy between natural and synthetic architectures in terms of the role of different length scales. This review is organized into four sections. First, the role and importance of multiscale, hierarchical structures is described with four representative examples. Second, recent achievements in multiscale patterning are introduced with their strengths and weaknesses. Third, four application areas of wetting control, dry adhesives, selectively filtrating membranes, and multiscale tissue scaffolds are overviewed by stressing out how and why multiscale structures need to be incorporated to carry out their performances. Finally, we present future directions and challenges for scalable, multiscale patterned surfaces.

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Section: Applications Of Bio‐inspired Multiscale Structuresmentioning

confidence: 99%

25th Anniversary Article: Scalable Multiscale Patterned Structures Inspired by Nature: the Role of Hierarchy

et al. 2013

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“…Various recent studies have concentrated on the evolvement of membranes with nanometer-scale pores [9], [141][142][143]. Several methods have been developed to fabricate nanoporous membranes such as lithography [65], [144], [145], ion track technique [146], selforganization [147], and sol-gel [91]. Most of these methods suffer from manufacturing complexity either in lithography processes or during membrane assembly to the microfluidic systems [141].…”

Section: 21mentioning

confidence: 99%

Femtosecond Laser Nano-Fabrication And Its Biomedical Applications

Tavangar¹

2021

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This dissertation aims to develop a new technique for fabrication of three-dimensional (3-D) interwoven nanofibrous platforms using femtosecond laser ablation of solids in ambient conditions. In the first part, the mechanism of ablation of solids by multiple femtosecond laser pulses in ambient air is described in an explicit analytical form. The formulas for evaporation rates and the number of ablated particles for laser ablation by multiple pulses as a function of laser parameters, background gas, and material properties are predicted and compared to experimental results. Later, the formation mechanism of the nanofibrous structures during laser ablation of targets in the presence of air is discussed. The results indicate that femtosecond laser ablation of solids at air background yields crystalline nanostructures. It’s also shown that this technique allows synthesis of 3-D nanostructures on a wide range of materials including synthetic and natural materials. Later, potential practice of the proposed technique for integration of nanostructures on transparent platforms as well as inside microstructures toward device fabrication is investigated. Presented studies show that integrated nanostructure inside microchannels can be fabricated in one single step using this technique. Finally, to address the potential use of the nanostructures for biomedical application, several studies are performed to evaluate the bioactivity and biocompatibility of the nanostructures. The fabricated nanostructures incorporate the functions of 3-D nano-scaled topography and modified chemical properties to improve osseointegration, while at the same time leaving space for delivering other functional agents.

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“…Microsieves were initially made from purely inorganic materials using photolithography, which facilitates the preparation of hierarchically structured microsieves via repeated cycles of lithographic structuring. The repertoire of methods to produce inorganic microsieves comprises furthermore non photo lithographic elements like the use of block copolymers as etch masks,13 the embedding of sacrificial particles as templates for pores,14 track etching,15 electroforming16, 17 and micromolding 18. Polymeric microsieves have been prepared by photolithography using directly the structured resist instead of transferring its structure into an underlying substrate 19.…”

Section: Analysis Of the Individual Batches Of Silica Particles Of Tmentioning

confidence: 99%

Hierarchically Structured Assembly of Polymer Microsieves, made by a Combination of Phase Separation Micromolding and Float‐Casting

et al. 2012

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Fabrication of nanoporous silicon dioxide/silicon nitride membranes using etched ion track technique

Cited by 23 publications

References 13 publications

25th Anniversary Article: Scalable Multiscale Patterned Structures Inspired by Nature: the Role of Hierarchy

25th Anniversary Article: Scalable Multiscale Patterned Structures Inspired by Nature: the Role of Hierarchy

Femtosecond Laser Nano-Fabrication And Its Biomedical Applications

Hierarchically Structured Assembly of Polymer Microsieves, made by a Combination of Phase Separation Micromolding and Float‐Casting

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